[vsnet-alert 22342] ASASSN-18ey = MAXI J1820+070: slow decline in brightness

[Yasuyuki WAKAMATSU]

ASASSN-18ey = MAXI J1820+070: slow decline in brightness

Ian Miller, Stephen Brincat, Domenico Licchelli, Itoh-san, Geoff Stone,
Tamas Tordai, Josch Hambsch, Michael Richmond, Kyoto U. team,
Vihorlat observatory team (Pavol A. Dubovsky, Tomas Medulka),
Crimean Astrophys. Obs. team reported further observations.

This object reached the maximum of brightness on July 15 and now
shows slow decline. The magnitude is now about 13.1 mag. Superhumps
still can be seen with its amplitude of ~0.4 mag and its period of
0.6864(1).
This superhump period seems to be constant from July 5.
Further observations are encouraged.